Leather-working machine



' 2 Sheeti-Sheta 1.

(No Model.) I G. W. BAKE-R.- i LEATHER WORKING MACHINE;

- 549,424 Patented Nov.v 5, 1895.

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,No. 502,269, filed June 10,1895.

' UNITED STATES PATENT OFFICE.

GEORGE V. BAKER, OF WILMINGTON, DELAVARE.

LEATHER-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 549,424, dated November5, 1895.

Application filed August 3, 1895. Serial No. 8,088. (No model.)

To all whom it may concern:

Be it known that i[, GEORGE W. BAKER, a citizen of the United States,and a resident of \Yilmington, in the county of New Castle and State ofDelaware, have invented certain new and useful Improvements in Leather-Vorking Machines 5 and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in theart to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

Figure 1 is a vertical section of a machine embodying my invention,taken on line X X, Fig. 2, the parts being shown in the positions theyoccupy when the forward stroke is one half completed. Fig. 2 is a planview of the machine, the overhanging arm 0 being removed and the forwardstroke of connect- Fig. 3 is a central vertical section throughstaking-tool and bearing L, which are shown as acting upon the leather,actuating parts also being shown, the toe K and overhanging arm 0 beingbroken away. Fig. 4 is a front view of the staking-tool plate and tool.Fig. 5 is a front view of the bearing L. Fig. 6 is a section through topportion of frame, showing slideplate and guideways therefor.

This invention has relation to leather-working machines of the characterdescribed and claimed in my pending application, Serial The machinedisclosed in the said application is especially designed for that classof work known to the trade as staking on leather requiring a smooth,soft, and flattened grain, which is the reverse of what is wanted onglove-leather, Where the grain is raised or swelled to little hills,resembling a pebble-grain; and the object of the present invention is toprovide a machine of the same general character provided with tooldevices more particularly designed for the class of work known as firststaking, perching, and padding-in other Words, stretching, shaping, andsmoothing the grain to lessen the labor on leather where ironing is donein order to smooth it.

The invention consists in the novel construction and combination ofparts, all as hereinafter described, and pointed out in the appendedclaims.

Referring to the accompanying drawings, the letter A designates theframe of machine. v

B is a horizontal reciprocating slide-plate, which moves in lateralguides in the open bed of the frame. 0 is an overhanging arm rigidlyattached to the said. plate.

D is the driving-shaft, which is journaled in a rearward extension ofthe frame, D the main wheel thereon, and D a fast and loosedriving-pulley therefor.

E is a connecting-rod from a crank-pin of the main wheel to the saidslide-plate, the connection with said plate being through a rocker E,which is fulcrumed on a shaft or axis f at the rear portion of theplate, and to .one arm of which rocker the connecting-rod is rigidlyconnected.

G designates a slotted cam-lever, which is fulcrumed on a stud g of thearm C, and whose cam-slot G, which is below the fulcrum, is engaged by aroller 72, which is journaled on a lateral stud of the forwardly anddownwardly-extending arm F of the rocker F. The lower arm of saidcam-slot is concentrio with the axis f, so that the lever G, during thetime the roller h is traversing this portion of the slot under themovement of the main wheel and connections, is held stationary. Theupper arm of said cam is cut on a different radius and approaches morenearly to the axis f, and the roller h in ascending this portion of theslot rocks the said lever to throw its upper arm toward the main wheel.During the descending movement of the roller h the said lever is rockedoppositely or away from the main wheel.

is a rod H, whoseopposite end is connected to the intermediate portionof a lever H, which is fulcrumed at h at its lower end to the arm OJ Iis a connecting-rod from the cam portion of the lever G to an arm J of ashaft J, which is journaled in bearings J on the under side of theslide-plate B near the forward end Connected to the upper arm of thelever G Too thereof, said shaft carrying toes K, which. actuate abearing device L hereinafter to be described.

As thus far described, the machine is prac' tically the same as thatdisclosed in the said application above referred to.

The device L, above referred to, which is for the purpose of forming asupport or bearing for the leather under operation of the staking-tool,comprises a casting having at its forward upper portion a verticalflange Z and lateral flanges 1'. To these lateral flanges is secured atransverse plate L, over which the leather is smoothed and stretched andwhich is rearwardly inclined, and which is so placed as to leave anarrow transverse opening I between its forward edge and the upper edgeportion of the flange I. At the central portion of said casting, at itsunder side, is a seat 122, to which is secured a bar M, which is carriedby a transverse arm or shaft M, which is fulcrumed in bearings of theslide-plate B. To the front side of said shaft M the bar M carries arubber or other spring M which is secured by jam-nuts m The said castingL has secured to its under side blocks L which are preferably of wood orsome other non-metallic material, and which rest upon the toes K abovereferred to. The purposeof these non-metallic blocks is to deaden thesound of working and render the parts noiseless to a great extent. Thecasting L works through a cut-away portion of the slide-plate and isalternately raised and lowered by the action of the toes K through theaction of the connecting-rod I and the cam-lever G.

At the forward end of the overhanging arm C is an oblique guideway N, inwhich is fitted to reciprocate a tool-arm N, which is actuated by meansof a link N which is connected to the said arm at n and to the upper endof the lever H before described. Pivoted to a lug 0, which projects fromthe front face of the said tool-arm, is a tool-plate O, to which issecured the knife or tool 0'.

O is an adj usting-screw in the hinged toolplate for the purpose ofregulating the distance of the same from the tool-arm.

P is a presser-foot or pad, which is situated immediately behind theknife 0 in oblique relation thereto. This foot or pad, which is ofmetal, hard rubber, or other suitable material, is carried by a plate p,which is fulcrumed at 1) between lugs 19, which project rearwardly fromthe lower portion of the tool-arm N. The extension of said plate abovethis fulcrum has a lug n at its upper end, which loosely engages a pinR, which is secured in and extends through the arm N and also throughthe tool-plate O. R R are rubber or other springs which are seated uponthe end portions of said pin and are secured by nuts 1' The apertures inthe plates 0 and P, through which this pin extends, are ofslightly-larger diameter than the pin in order that the said plates withtheir springs may yield somewhat under the working of the knife and pad.The extent of such yielding movement is regulated by the adjustment ofthe said springs.

S is a slotted table which is supported upon the forward portion of theframe A.

In operation the skin of leather is placed upon this table between thetool 0 and the pad P on the upper side and the casting L on the underside, and is held against the front edge of the table by the operator orby means of a suitable clamp. (Not shown.) Suitable clamps for thepurpose are described and shown in former patents granted to me, also inthe application above referred to. Under the action of theconnecting-rod, the camlcver, and the parts actuated thereby theslide-plate 13, the arm (J, the tool 0, and the casting L move forwardtogether and the said tool is raised from the work, while the casting isdepressed. Upon the commencement of the return movement, however, saidplates come together upon the work, which is pressed by the tool intothe slot Z of the casting, and is also caught between the pad and theplate L. The parts remain in this position during this entire movement.Upon the commencement of the next forward movement the tool and castingagain recede from each other, and the operator is permitted to shift theleather to obtain a fresh purchase for the next stroke. Thepressure-foot or pad performs several different purposes. In the firstplace it is intended to give a yielding pressure to the leather inadvance of the knife or tool. \Vithout it the leather would simply pullunder the knife and would not be stretched. In the second place, beingmade with a smooth surface, it helps to smooth or pad the leather whenworked with the grain side up, and when worked with the graid side downthe smooth corners of the throat-plate or bar act in the same manner andreduce the amount of ironing for that purpose. It also keeps the leathereven and smooth in advance of the knife or tool.

It will be observed that the machine as above described is free fromgears and sprin (except the small ones in connection with the stakingdevices) and lost motion, being extremely simple, strong, durable, andnoiseless in its action. It is designed. to work equally well on tight,heavy, and medium stock, and especially on the kind where the grain isto be made smooth, and where heated flat-irons are used to lay thegrain.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a leather working machine, the combination of a horizontallyreciprocating slid e plate, an overhanging arm secured thereto, a toolarm arranged to reciprocate in a guide way of the overhanging arm, atool plate pivotally secured to said tool arm, means for ITO holdingsaid arm in working position, a tool carried by said plate, and meansfor reciprocating said slide plate and tool arm, substantially asspecified.

2. In a leather working machine, the combination of ahorizontallyreciprocating slide plate, an overhanging arm securedthereto, a tool arm arranged to reciprocate in a guide way of theoverhanging arm, a tool plate pivotally secured to said tool arm, apador pressure foot Whose support is also pivotally attached to said arm,means for holding said arm and pressure foot in working position andmeans for reciprocating said slide plate and tool arm, substantially asspecified.

3. In a leather working machine, the combination of a horizontallyreciprocating slide plate, an arm secured thereto, a tool arm arrangedto reciprocate in a guide way of said arm, a tool plate pivotallysecured to said tool arm, the tool, a pad or pressure foot pivotallysecured to said tool arm, means for holding said tool arm and pressurefoot in working position, a vertically movable supporting device belowsaid tool and pad which supports the leather, means for actuating saidtool arm and support to cause them to simultaneously approach and recedefrom each other, and means for reciprocating said slide plate,substantially as specified.

4. In a leather working machine, the combination of the main wheel, thehorizontally reciprocating slide plate, the connecting rod,

the slotted cam lever, the overhanging arm secured to said slide plate,the tool arm arranged to reciprocate in a guide way of said arm, thetool plate, pivotally secured to said tool arm, the tool, the pressurefoot or pad, which is also hinged to said tool arm, means for holdingsaid tool arm and pressure foot in working position, the verticallymovable support L below said tool and pressure foot or pad, and meansactuated by said slotted cam lever for causing said support and tool armto simultaneously approach and recede from each other, substantially asspecified.

5. In a leather working machine, the reciprocating tool arm, the toolplate hinged or pivoted thereto, the pressure foot or pad also pivotallyconnected to said arm, the pin secured in said arm and passing looselythrough the tool plate and through the part which carries said foot orpad, and the springs and adjusting nuts on said pin, substantially asspecified.

6. In a leather working machine, the vertically movable casting L,having the vertical flange Z, and transverse plate L to the rear of saidflange and separated therefrom by a slot, in combination with a tooladapted to press the leather into said slot, a pad adapted to hold theleather to said plate L, and means for operating said tool and pad andthe said casting to cause them to simultaneously approach and recedefrom each other, substantially as specified.

7. In a leather Workin g machine, the combination with a horizontallyreciprocating slotted slide plate, of the arm or shaft M fulcrumedthereto, the bar M carried by said arm or shaft, the casting L attachedto said bar M and having the flange Z, the plate L, and the non-metallicblocks L thespring M on the bar M, and means for intermittently raisingsaid bar and casting, substantially as specified.

In testimony whereof I aifix my signature in presence of two witnesses.

GEORGE W BAKER.

Witnesses:

IVIAURICE P. SATTERTHWAITE, HENRY F. BIGLEY.

